The mission Ruling House will be your next objective within the Gone to Ground questline. Return to Earth to fight against the House of Kings, another house Skolas is trying to obtain.

The Fallen and Hive will be clashing within the Cosmodrome as you make your way to find the lair of the House of Kings, but your signal is jammed due to the Servitors. Destroy them to regain communications. Then, fight through the masses and break their hold on the area until your reach the King's Watch.

Be sure to pick up the Ghost in this area first. Then, face off against the three Wolf Barons and their allies in their base. Sniping from the end of the hall with an Arc sniper rifle is a very effective means of taking them down.